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99 lines
3.2 KiB
Go
99 lines
3.2 KiB
Go
// black-box testing
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package errors_test
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import (
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"fmt"
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"testing"
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"github.com/kataras/iris/core/errors"
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)
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var errMessage = "User with mail: %s already exists"
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var errUserAlreadyExists = errors.New(errMessage)
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var userMail = "user1@mail.go"
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var expectedUserAlreadyExists = "User with mail: user1@mail.go already exists"
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func getNewLine() string {
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if errors.NewLine {
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return "\n"
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}
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return ""
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}
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func ExampleError() {
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fmt.Print(errUserAlreadyExists.Format(userMail))
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// first output first Output line
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fmt.Print(errUserAlreadyExists.Format(userMail).Append("Please change your mail addr"))
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// second output second and third Output lines
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// Output:
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// User with mail: user1@mail.go already exists
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// User with mail: user1@mail.go already exists
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// Please change your mail addr
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}
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func do(method string, testErr *errors.Error, expectingMsg string, t *testing.T) {
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formattedErr := func() error {
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return testErr.Format(userMail)
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}()
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if formattedErr.Error() != expectingMsg {
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t.Fatalf("error %s failed, expected:\n%s got:\n%s", method, expectingMsg, formattedErr.Error())
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}
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}
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func TestFormat(t *testing.T) {
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expected := errors.Prefix + expectedUserAlreadyExists + getNewLine()
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do("Format Test", errUserAlreadyExists, expected, t)
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}
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func TestAppendErr(t *testing.T) {
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errors.NewLine = true
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errors.Prefix = "error: "
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errChangeMailMsg := "Please change your mail addr"
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errChangeMail := fmt.Errorf(errChangeMailMsg) // test go standard error
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expectedErrorMessage := errUserAlreadyExists.Format(userMail).Error() + errChangeMailMsg + getNewLine() // first Prefix and last newline lives inside do
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errAppended := errUserAlreadyExists.AppendErr(errChangeMail)
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do("Append Test Standard error type", &errAppended, expectedErrorMessage, t)
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}
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func TestAppendError(t *testing.T) {
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errors.NewLine = true
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errors.Prefix = "error: "
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errChangeMailMsg := "Please change your mail addr"
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errChangeMail := errors.New(errChangeMailMsg) // test Error struct
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expectedErrorMessage := errUserAlreadyExists.Format(userMail).Error() + errChangeMail.Error() + getNewLine() // first Prefix and last newline lives inside do
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errAppended := errUserAlreadyExists.AppendErr(errChangeMail)
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do("Append Test Error type", &errAppended, expectedErrorMessage, t)
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}
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func TestAppend(t *testing.T) {
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errors.NewLine = true
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errors.Prefix = "error: "
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errChangeMailMsg := "Please change your mail addr"
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expectedErrorMessage := errUserAlreadyExists.Format(userMail).Error() + errChangeMailMsg + getNewLine() // first Prefix and last newline lives inside do
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errAppended := errUserAlreadyExists.Append(errChangeMailMsg)
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do("Append Test string Message", &errAppended, expectedErrorMessage, t)
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}
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func TestNewLine(t *testing.T) {
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errors.NewLine = false
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errNoNewLine := errors.New(errMessage)
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expected := errors.Prefix + expectedUserAlreadyExists
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do("NewLine Test", errNoNewLine, expected, t)
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errors.NewLine = true
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}
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func TestPrefix(t *testing.T) {
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errors.Prefix = "MyPrefix: "
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errUpdatedPrefix := errors.New(errMessage)
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expected := errors.Prefix + expectedUserAlreadyExists + "\n"
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do("Prefix Test with "+errors.Prefix, errUpdatedPrefix, expected, t)
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}
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